145 tracked 13F filers disclose a position in LAB as of the latest SEC 13F filings, a combined $234.3M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Casdin Capital, LLC | $81.6M | 88.8M | —Held | Q1 2026 | |
| 2 | VIKING GLOBAL INVESTORS LP | $53.9M | 58.7M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | $22.8M | 24.8M | ▼−3.0% Reduced · −760K sh | Q1 2026 | |
| 4 | Long Focus Capital Management, LLC | $14.7M | 16.0M | ▲+26% Added · +3.3M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $11.8M | 12.8M | →First observed position No prior filed position | Q1 2026 | |
| 6 | Hollow Brook Wealth Management LLC | $4.5M | 5.5M | ▼−2.6% Reduced · −150K sh | Q3 2026 | |
| 7 | Neuberger Berman Group LLC | $4.3M | 4.7M | ▲+0.7% Added · +33K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $3.2M | 3.9M | ▼−47% Reduced · −3.4M sh | Q2 2026 | |
| 9 | MORGAN STANLEY | $2.7M | 2.9M | ▼−62% Reduced · −4.8M sh | Q1 2026 | |
| 10 | BARCLAYS PLC | $2.4M | 2.6M | ▼−15% Reduced · −463K sh | Q1 2026 | |
| 11 | NORTHERN TRUST CORP | $2.3M | 2.5M | ▲+2.7% Added · +64K sh | Q1 2026 | |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $2.2M | 2.4M | ▼−3.7% Reduced · −93K sh | Q1 2026 | |
| 13 | Peapod Lane Capital LLC | $2.0M | 2.4M | ▲+19% Added · +383K sh | Q2 2026 | |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.2M | 2.4M | →First observed position No prior filed position | Q1 2026 | |
| 15 | MILLENNIUM MANAGEMENT LLC | $1.9M | 2.1M | ▼−38% Reduced · −1.3M sh | Q1 2026 | |
| 16 | VANGUARD FIDUCIARY TRUST CO | $1.8M | 1.9M | →First observed position No prior filed position | Q1 2026 | |
| 17 | Sone Capital Management, LLC | $1.6M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 18 | STATE STREET CORP | $1.3M | 1.5M | ▼−76% Reduced · −5.0M sh | Q2 2026 | |
| 19 | CITADEL ADVISORS LLC | $1.1M | 1.2M | ▲+14% Added · +149K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $867K | 943K | ▲+79% Added · +417K sh | Q1 2026 | |
| 21 | AQR CAPITAL MANAGEMENT LLC | $858K | 933K | ▲+122% Added · +514K sh | Q1 2026 | |
| 22 | STALEY CAPITAL ADVISERS INC | $658K | 800K | ▲+27% Added · +168K sh | Q2 2026 | |
| 23 | JBF Capital, Inc. | $1.0M | 771K | ▲New +771K sh | Q3 2025 | |
| 24 | Bank of New York Mellon Corp | $705K | 767K | ▼−3.4% Reduced · −27K sh | Q1 2026 | |
| 25 | Man Group plc | $611K | 743K | ▲New +743K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 14 funds opened a new position in LAB and 13 added to an existing one, while 10 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 64 funds | $111.0B |
| MICROSOFT CORPMSFT | 63 funds | $154.9B |
| NVIDIA CORPNVDA | 62 funds | $226.4B |
| META PLATFORMS INC-CLASS AMETA | 62 funds | $64.8B |
| APPLE INCAAPL | 60 funds | $167.7B |
| SALESFORCE INCCRM | 60 funds | $8.2B |
| ELI LILLY & COLLY | 59 funds | $55.1B |
| VISA INC-CLASS A SHARESV | 59 funds | $40.2B |
| JPMORGAN CHASE & COJPM | 59 funds | $35.6B |
| CHEVRON CORPCVX | 59 funds | $14.7B |
| THERMO FISHER SCIENTIFIC INCTMO | 59 funds | $12.8B |
| BROADCOM INCAVGO | 58 funds | $90.2B |
Ranked by how many of LAB's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 4, 2025 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | Buy (P) | 150K | $218K |
| Dec 3, 2025 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | Buy (P) | 75K | $108K |
| Dec 2, 2025 | CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC | Director | Buy (P) | 125K | $178K |
| Nov 25, 2025 | Casdin Partners GP, LLC | Director, 10% Owner | Buy (P) | 7.5M | $9.8M |
| Nov 24, 2025 | Casdin Partners GP, LLC | Director, 10% Owner | Buy (P) | 150K | $215K |
| Nov 20, 2025 | Casdin Eli | Director, 10% Owner | Buy (P) | 450K | $585K |
| Nov 19, 2025 | Casdin Eli | Director, 10% Owner | Buy (P) | 350K | $448K |
| Nov 18, 2025 | Casdin Eli | Director, 10% Owner | Buy (P) | 275K | $338K |
| Nov 17, 2025 | Casdin Partners Master Fund, L.P. | Director, 10% Owner | Buy (P) | 225K | $275K |
| Nov 14, 2025 | Casdin Partners Master Fund, L.P. | Director, 10% Owner | Buy (P) | 250K | $310K |
| Nov 13, 2025 | Casdin Partners Master Fund, L.P. | Director, 10% Owner | Buy (P) | 450K | $540K |
| Nov 12, 2025 | Casdin Partners GP, LLC | Director, 10% Owner | Buy (P) | 375K | $446K |
Connected entities for LAB
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/LAB/capital-change-brief"
Use Arkolith's capital_change_brief for LAB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for LAB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.